recover rrt_gw setting for non-p2p case.  otherwise, we will not be able to recover interface route on interface down -> up transition.
recover rrt_gw setting for non-p2p case.  otherwise, we will not be able
to recover interface route on interface down -> up transition.

MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame